CVE-2023-6728

Configuration disclosure via brute-forceable BOF encryption

Published Oct 17, 2024 · Updated Nov 5, 2024

Inadequate encryption in Nokia SR OS before Release 24 allows local users with an encrypted bof.cfg file to read BOF configuration content. The bof.cfg encryption mechanism protects the boot options file with cryptography that Nokia identifies as susceptible to brute-force recovery, but Nokia has not disclosed the defective construction. Exploitation requires possession of encrypted bof.cfg; decryption exposes only stored BOF configuration content, with no reported modification or service interruption.

CVSS severity3.3
Low
EPSS probability0.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inadequate encryption in Nokia SR OS before Release 24 allows local users with an encrypted bof.cfg file to read BOF configuration content. The bof.cfg encryption mechanism protects the boot options file with cryptography that Nokia identifies as susceptible to brute-force recovery, but Nokia has not disclosed the defective construction. Exploitation requires possession of encrypted bof.cfg; decryption exposes only stored BOF configuration content, with no reported modification or service interruption.

The record

CVE
CVE-2023-6728
Published
Oct 17, 2024
Updated
Nov 5, 2024
Vendor
Nokia
Product
Service Router Operating System (SR OS)
Classifications
CWE-326, T1140
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All supported releases prior to Release 24

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Nokia · Service Router Operating System (SR OS)version=All supported releases prior to Release 24

Published CVSS scores

3.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.3NokiaCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength
T1140Deobfuscate/Decode Files or Information

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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